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Общее количество найденных документов : 40
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1.


    KARYAGIN, V. V.
    DRAG THERMOELECTRIC-POWER OF A TWO-DIMENSIONAL ELECTRON-GAS IN A GAAS-GAAIAS HETEROSTRUCTURE / V. V. KARYAGIN, I. I. LYAPILIN, V. V. DYAKIN // SOVIET PHYSICS SEMICONDUCTORS-USSR. - 1988. - Vol. 22, Is. 8. - P. 954-955. - Cited References: 3 . - ISSN 0038-5700
РУБ Physics, Condensed Matter


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Доп.точки доступа:
LYAPILIN, I. I.; DYAKIN, V. V.
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2.


    SHAPIRO, V. E.
    NEW METHOD AND EXACT-SOLUTIONS FOR WAVES IN RANDOM-MEDIA / V. E. SHAPIRO // Phys. Lett. A. - 1992. - Vol. 162, Is. 4. - P. 309-312, DOI 10.1016/0375-9601(92)90022-E. - Cited References: 14 . - ISSN 0375-9601
РУБ Physics, Multidisciplinary
Рубрики:
RADIATIVE TRANSPORT-THEORY
   POWER STATISTICS

   ONE-DIMENSION

   PROPAGATION

Аннотация: A method based on the kinetic equations for Markov processes is found which is effective within as well as beyond the scope of conventional restrictions - one-dimensional stochastic equations with given initial conditions. For the first time the problem of finding averages for linear systems with nonadditive random influence, typical models of the theory of wave propagation in random media, is solved to obtain exact solutions.

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Держатели документа:
L.V. Kirenski Institute of Physics, Krasnoyarsk, 660036, Russian Federation
ИФ СО РАН
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3.


    KRASNOV, I. V.
    STRAIGHTENING EFFECT OF RADIATION POWER AND LIGHT-INDUCED PHENOMENA OF TRANSFER IN RESONANCE GASES / I. V. KRASNOV // Zhurnal Eksperimentalnoi Teor. Fiz. - 1995. - Vol. 107, Is. 4. - P. 1135-1152. - Cited References: 18 . - ISSN 0044-4510
РУБ Physics, Multidisciplinary
Рубрики:
FORCE
   ATOMS


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4.


   
    Efficient selective excitation in optically thick extensive media by adiabatic population transfer / V. G. Arkhipkin [et al.] ; ed.: K Mima, GL Kulcinski, ki, GL Kulci // High-power lasers in energy engineering. Ser. Proceedings of the society of photo-optical instrumentation engineers (SPIE) : SPIE-Int. Soc. Optical Engineering, 2000. - Vol. 3886. - P. 699-703, DOI 10.1117/12.375171. - Cited References: 13 . - ISBN 0277-786X. - ISBN 0-8194-3484-1
РУБ Optics + Physics, Applied + Physics, Fluids & Plasmas
Рубрики:
ELECTROMAGNETICALLY INDUCED TRANSPARENCY
   MULTILEVEL SYSTEMS

   LASER-PULSES

Кл.слова (ненормированные):
adiabatic population transfer -- electromagnetically induced transparency -- counterintuitive pulse sequence
Аннотация: In this work the feature of spatio-temporal evolution of two partially overlapped short pulses of counterintuitive sequence in a medium of three-level absorbing atoms in conditions of adiabatic transfer of population are investigated. The analytic solution is constructed. It is shown, that selective excitation of two-photon resonant state with a near-unity probability is conserved on the length of medium, which is considerably greater than the absorbtion length of a weak probe pulse in the absence of a coupling pulse at the adjacent transition.

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Доп.точки доступа:
Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Manushkin, D. V.; Timofeev, V. P.; Timofeev, I. V.; Тимофеев, Иван Владимирович; Conference on High-Power Lasers in Energy Engineering (1999, Nov. ; Osaka, Japan)
}
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5.


    Berggren, K. F.
    Crossover from regular to irregular behavior in current flow through open billiards / K. F. Berggren, A. F. Sadreev, A. A. Starikov // Phys. Rev. E. - 2002. - Vol. 66, Is. 1. - Ст. 16218, DOI 10.1103/PhysRevE.66.016218. - Cited References: 36 . - ISSN 1539-3755
РУБ Physics, Fluids & Plasmas + Physics, Mathematical
Рубрики:
PHASE SINGULARITIES
   NODAL POINTS

   WAVE-FIELDS

   QUANTUM

   STREAMLINES

   CONDUCTANCE

   VORTICES

   CHAOS

Кл.слова (ненормированные):
Eigenvalues and eigenfunctions -- Mathematical models -- Networks (circuits) -- Random processes -- Resonance -- Signal processing -- Spurious signal noise -- Bursting time series -- Coherence resonance -- Power spectrum -- Stochastic resonance -- Chaos theory
Аннотация: We discuss signatures of quantum chaos in terms of distributions of nodal points, saddle points, and streamlines for coherent electron transport through two-dimensional billiards, which are either nominally integrable or chaotic. As typical examples of the two cases we select rectangular and Sinai billiards. We have numerically evaluted distribution functions for nearest distances between nodal points and found that there is a generic form for open chaotic billiards through which a net current is passed. We have also evaluated the distribution functions for nodal points with specific vorticity (winding number) as well as for saddle points. The distributions may be used as signatures of quantum chaos in open systems. All distributions are well reproduced using random complex linear combinations of nearly monochromatic states in nominally closed billiards. In the case of rectangular billiards with simple sharp-cornered leads the distributions have characteristic features related to order among the nodal points. A flaring or rounding of the contact regions may, however, induce a crossover to nodal point distributions and current flow typical for quantum chaos. For an irregular arrangement of nodal points, as for example in the Sinai billiard, the quantum flow lines become very complex and volatile, recalling chaos among classical trajectories. Similarities with percolation are pointed out.

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Держатели документа:
Linkoping Univ, Dept Phys & Measurement Technol, S-58183 Linkoping, Sweden
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Dept. of Phys. and Msrmt. Technology, Linkoping University, S-581 83 Linkoping, Sweden
Kirensky Institute of Physics, 660036, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Sadreev, A. F.; Садреев, Алмаз Фаттахович; Starikov, A. A.
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6.


    Zobov, V. E.
    On the coordinate of a singular point of the time correlation function for a spin system on a simple hypercubic lattice at high temperatures / V. E. Zobov, M. A. Popov // Theor. Math. Phys. - 2002. - Vol. 131, Is. 3. - P. 862-872, DOI 10.1023/A:1015935809388. - Cited References: 19 . - ISSN 0040-5779
РУБ Physics, Multidisciplinary + Physics, Mathematical
Рубрики:
NUCLEAR-DOUBLE-RESONANCE
   HEISENBERG MAGNET

   DEPENDENCE

   MODEL

Кл.слова (ненормированные):
spin dynamics -- correlation functions -- power series in time -- frequency moments -- singular points -- generated functions -- lattice trees -- multidimensional expansion -- Correlation functions -- Frequency moments -- Generated functions -- Lattice trees -- Multidimensional expansion -- Power series in time -- Singular points -- Spin dynamics
Аннотация: Using the d(-1) expansion method (d is the space dimension), we estimate the coordinate of the time-dependent autocorrelation function singular point on the imaginary time axis for the spin 1/2 Heisenberg model on a simple hypercubic lattice at high temperatures. We represent the coefficients of the time expansion (the spectral moments) for the autocorrelation function as the sums of the weighted lattice figures in which the trees constructed from the double bonds give the leading contributions with respect to d(-1) and the same trees with the built-in squares from six bonds or diagrams with the fourfold bonds give the contribution of the next-to-leading order. We find the corrections to the coordinate of the autocorrelation function singular point that are due to the latter contributions.

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Держатели документа:
RAS, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Krasnoyarsk State Univ, Krasnoyarsk, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, RAS, Krasnoyarsk, Russian Federation
Kirensky State University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Popov, M. A.; Зобов, Владимир Евгеньевич
}
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7.


   
    Mossbauer and magnetic study of microspheres extracted from fly ashes of power stations [Text] / O. A. Bayukov [et al.] // The Physics of Metals and Metallography. - 2006. - Т. 102, SUPPL. 1, DOI 10.1134/S0031918X06140134 . - ISSN 0031-918X. - ISSN 1531-8672
ГРНТИ

MeSH-главная:


РИНЦ,
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Держатели документа:
Institute of Chemistry and Chemical Technology,Siberian Division,Russian Academy of Sciences
Kirensky Institute of Physics,Siberian Division,Russian Academy of Sciences
Доп.точки доступа:
Bayukov, O. A.; Баюков, Олег Артемьевич; Balaev, A. D.; Балаев, Александр Дмитриевич; Petrov, M. I.; Петров, Михаил Иванович; Anshits, A. G.; Аншиц, Александр Георгиевич; Sharonova, O. M.; Rabchevskii, E. V.
}
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8.


    Zobov, V. E.
    Second moment of multiple-quantum NMR and a time-dependent growth of the number of multispin correlations in solids / V. E. Zobov, A. A. Lundin // J. Exp. Theor. Phys. - 2006. - Vol. 103, Is. 6. - P. 904-916, DOI 10.1134/S1063776106120089. - Cited References: 39 . - ISSN 1063-7761
РУБ Physics, Multidisciplinary
Рубрики:
NUCLEAR-MAGNETIC-RESONANCE
   LINE-SHAPE

   SPIN SYSTEMS

   DYNAMICS

   SPECTRA

   COHERENCES

   STATE

   BEHAVIOR

   CRYSTAL

   MODEL

Кл.слова (ненормированные):
Correlation methods -- Mathematical models -- Nuclear magnetic resonance spectroscopy -- Spectrum analysis -- Time series analysis -- Four-spin time correlation -- Multispin correlations -- Second moment -- Time power series -- Quantum theory
Аннотация: The time evolution of multispin correlations (the growth of the number of correlated spins as a function of time) can be observed directly using the multiple-quantum nuclear magnetic resonance spectroscopy of solids. A quantity related to this number, namely, the second moment of the intensity distribution of coherences of different orders in the multiple-quantum spectrum can be calculated using the theory proposed in this work. An approach to the calculation of the four-spin time correlation function through which this moment is expressed is developed. The main sequences of contributions in the expansion of this function into a time power series are summed using the approximation of a large number of neighbors both for systems with a secular dipole-dipole interaction and for systems with a nonsecular effective interaction. An exponential dependence of is obtained. The value of is additionally calculated using an expansion in terms of orthogonal operators for three model examples corresponding to different limiting realizations of spin systems. It is shown that the results of the microscopic theory at least qualitatively agree with both the results obtained for model examples and experimental results obtained recently for adamantane.

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Держатели документа:
Russian Acad Sci, Siberian Div, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Russian Acad Sci, Semenov Inst Chem Phys, Moscow 117977, Russia
ИФ СО РАН
Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow, 117977, Russian Federation

Доп.точки доступа:
Lundin, A. A.; Зобов, Владимир Евгеньевич
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9.


   
    The magnetic-field-driven effect of microwave detection in a manganite granular system / N. V. Volkov [et al.] // J. Phys. D. - 2008. - Vol. 41, Is. 1. - Ст. 15004, DOI 10.1088/0022-3727/41/1/015004. - Cited References: 24 . - ISSN 0022-3727
РУБ Physics, Applied
Рубрики:
IDENTICAL METALS
   TUNNEL-JUNCTIONS

   MAGNETORESISTANCE

   RECTIFICATION

   SPINTRONICS

   TEMPERATURE

   PEROVSKITES

Кл.слова (ненормированные):
Bias currents -- Curie temperature -- Electric power generation -- Granular materials -- Magnetic field effects -- Microwave irradiation -- Voltage measurement -- Direct current voltage -- Magnetic tunnel junctions -- Metal insulator metal junctions -- Nonmagnetic metals -- Manganites
Аннотация: We demonstrate the microwave detection effect in a granular La0.7Ca0.3MnO3 sample. Dc voltage generated by the sample in response to microwave irradiation below the Curie temperature is found to be dependent on the applied magnetic field. The magnetic field dependence of the dc voltage has a broad peak resembling an absorption line. The detection effect depends substantially on the magnetic history of the sample; however, identical measurement conditions provide reproducibility of the experimental results. The detected dc voltage increases linearly with microwave power and strongly depends on a bias current through the sample. According to the results of systematic measurements, there exist two contributions to a value of the detected output signal. The first is magneto-independent; it can be explained in the framework of a mechanism used traditionally for description of the rectification effect in metal-insulator-metal junctions with nonmagnetic metals. The other is magneto-dependent; it originates from the interplay between the spin-dependent current through magnetic tunnel junctions and spin dynamics of the grains, which form these junctions in the sample.

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Держатели документа:
[Volkov, N. V.
Eremin, E. V.
Shaykhutdinov, K. A.
Tsikalov, V. S.
Petrov, M. I.
Balaev, D. A.
Semenov, S. V.] Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia
[Volkov, N. V.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, Krasnoyarsk 660041, Russian Federation

Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Eremin, E. V.; Еремин, Евгений Владимирович; Shaykhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Tsikalov, V. S.; Petrov, M. I.; Петров, Михаил Иванович; Balaev, D. A.; Балаев, Дмитрий Александрович; Semenov, S. V.; Семенов, Сергей Васильевич
}
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10.


   
    Optically driven conductivity and magnetoresistance in a manganite-based tunnel structure / N. V. Volkov [et al.] // J. Phys. D. - 2009. - Vol. 42, Is. 20. - Ст. 205009, DOI 10.1088/0022-3727/42/20/205009. - Cited References: 13. - This study was supported by the Russian Foundation for Basic Research (Projects Nos 08-02-00259-a and 08-02-00397-a) and the Division of Physical Sciences of the RAS, Programme 'Spin-dependent Effects in Solids and Spintronics' (Project No 2.4.2 of the Siberian Branch of the RAS). . - ISSN 0022-3727
РУБ Physics, Applied
Рубрики:
JUNCTIONS
Кл.слова (ненормированные):
Conducting layers -- Current-in-plane geometry -- Dielectric layer -- Electron hole pairs -- Interband absorption -- Magnetic tunnel junction -- Magnetic tunnels -- Multilayer structures -- Optical radiations -- Photoinduced change -- Potential barriers -- Radiation power density -- Threshold characters -- Tunnel structures -- Electric resistance -- Lanthanum -- Light -- Magnetic field effects -- Magnetoelectronics -- Magnetoresistance -- Manganese compounds -- Oxide minerals -- Photovoltaic effects -- Semiconductor junctions -- Transport properties -- Vehicular tunnels -- Wind tunnels -- Tunnel junctions
Аннотация: In the multilayer structure, La(0.7)Sr(0.3)MnO(3)/depleted manganite layer/MnSi, the photovoltaic effect has been discovered. The depleted manganite layer in the structure is dielectric and serves as a potential barrier between the ferromagnetic conducting La(0.7)Sr(0.3)MnO(3) and MnSi layers by the formation of a magnetic tunnel junction. The photoinduced changes in the transport properties of the magnetic tunnel structure have been observed in the current-in-plane geometry. The changes are reversible and saturate at radiation power densities over 30 mW cm(-2). The photovoltaic effect has a threshold character: it reveals only at h nu > 1.17 eV. Most likely, the effect of optical radiation is related to the formation of electron-hole pairs due to interband absorption of light in the dielectric layer. A photocurrent through the tunnel junctions separating the conducting layers causes a redistribution of the current channels between the conducting layers, which influences the conductivity and the magnetoresistance of the structure.

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Держатели документа:
[Volkov, N. V.
Kim, P. D.
Eremin, E. V.
Patrin, G. S.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Volkov, N. V.
Patrin, G. S.] Siberian Fed Univ, Inst Engn Phys, Krasnoyarsk 660041, Russia
[Lee, C. G.] Changwon Natl Univ, Sch Nano & Adv Mat Engn, Chang Won 641773, Gyeongnam, South Korea
[Eremin, E. V.] Siberian State Aerosp Univ, Inst Space Technol, Krasnoyarsk 660014, Russia
ИФ СО РАН
Kirensky Institute of Physics, Russian Academy of Science, Siberian Branch, Krasnoyarsk 660036, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk 660041, Russian Federation
Changwon National University, School of Nano and Advanced Materials Engineering, Gyeongnam 641-773, Changwon, South Korea
Institute of Space Technology, Siberian State Aerospace University, Krasnoyarsk 660014, Russian Federation

Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Lee, C. G.; Kim, P. D.; Ким, Пётр Дементьевич; Eremin, E. V.; Еремин, Евгений Владимирович; Patrin, G. S.; Патрин, Геннадий Семёнович; Russian Foundation for Basic Research [08-02-00259-a, 08-02-00397-a]; Division of Physical Sciences of the RAS; [2.4.2]
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